Method for improving balance of power-driven hanging basket working platform and electrical system

Abstract

The invention discloses a method for improving balance of power-driven hanging basket working platform and an electrical system. The method comprise: comparing the given signal with the current detection and position detection signals fed back during running of left and right switched reluctance motors by a first reluctance motor controller and a second reluctance motor controller; sending the exact control information combined by the first reluctance motor controller and the second reluctance motor controller to the left and right switched reluctance motors to eliminate difference between the two motors so as to realize synchronization of the two motors. The electrical system comprises left and right hanging basket hoisting machines with the same structures, the first reluctance motor controller, the second reluctance motor controller, an ascending switch BTA, a descending switch FTA and a stop switch QA. The invention is characterized by exact synchronization, stable running, accurate control and high safety and reliability.

Description

technical field [0001] The invention is applied in the field of construction machinery and motor control, and can accurately control the rotation speeds of the left and right hoist motors of the existing electric hanging baskets for high-altitude operations, thereby improving the balance and safety factor of the working platform of the electric hanging baskets, and reducing accidents and personal injuries. Casualties are of great significance and belong to the field of balance control of hanging platform working platforms in electrical automation. Background technique [0002] Accidents of various sizes occur frequently during the construction process of the hanging basket hoist. According to incomplete statistics, in recent years, there have been nearly a hundred accidents caused by hanging baskets in the construction market every year, some of which are caused by the inclination of the working platform due to the incomplete synchronization of the motor speeds of the left a...

AI Technical Summary

Problems solved by technology

[0010] The above solutions have reduced the incidence of accidents to varying degrees, but it is not difficult to see what they have in common: these solutions provide external circuits and other devices with higher safety factors for the application defects of AC asynchronous motors, To reduce the risk factor during use, such as schemes 1, 3 and 4, use protective devices and high-quality steel wire ropes to catch falling materials that have already formed an inclination. Therefore, these schemes are only remedial measures after the accident occurs, reducing The adverse effects of the accident cannot solve the problem of hoist tilt caused by the speed difference

[0011] However, Scheme 2 uses a leveling circuit, that is, when the hoist cannot be leveled, a feedback signal is given through the adjustment and control of the external circuit to control the rotation of the motor, so that the platform is re-formed into a level state and the accident rate is reduced, but the defect of this method Because the system is too complicated, there will be a certain delay when the feedback signal is transmitted to the motor, and then the adjustment of the motor cannot fundamentally solve the material falling accident caused by the difference in motor speed

All in all, the above solutions are all patch solutions for the application defects of AC induction motors on the hoist, without fundamentally solving the problem

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